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Sand Low-Pressure Casting System: Precision Casting for Demanding Applications
✅ Integrated System Design
Our sand low-pressure casting equipment comprises two core components:
1. Sealed Holding Furnace: Features a dedicated mold platform on its cover.
2. Advanced Liquid Surface Pressurization Control System: Ensures precise pressure management throughout the cycle.
✅ Streamlined Operation
1. The operator positions the prepared sand mold onto the furnace cover platform.
2. The mold seals automatically with the stalk tube.
3. The automated pressurization cycle initiates:
o Pressurized Pouring: Metal rises smoothly into the mold.
o Filling & Pressurization: Controlled cavity filling.
o Pressure Holding: Maintained during solidification.
o Pressure Release: Unsolidified metal returns to the furnace.
4. The mold is lifted off and opened for part removal.
✅ Core Technology: Precision Pressure Control
• Proportional Valve & High-Accuracy Sensor: Enable real-time, closed-loop pressure feedback and PID control within the holding furnace.
• Multi-Stage Linear Pressurization: Precisely follows programmed pressure curves.
• Critical for Sand Casting: Eliminates molten metal surface turbulence ("jitter") during filling, ensuring:
o Smooth, constant fill rates.
o Accurate pressure control.
o Exceptional process repeatability.
• Essential Compensation: Automatic leak compensation and liquid level compensation maintain stability.
• Result: Highly consistent castings, minimized sand erosion/scoring defects, and significantly improved yield.
✅ Intelligent Control & Data Management
• PC-Based HMI: Runs Weltop's proprietary Windows software with intuitive Chinese/English interface.
• Database Technology: Records and stores complete process data for every single casting.
• Traceability & Analysis: Enables historical data review, process optimization, and enhanced production quality management.
Sand Low-Pressure Casting System: Precision Casting for Demanding Applications
✅ Integrated System Design
Our sand low-pressure casting equipment comprises two core components:
1. Sealed Holding Furnace: Features a dedicated mold platform on its cover.
2. Advanced Liquid Surface Pressurization Control System: Ensures precise pressure management throughout the cycle.
✅ Streamlined Operation
1. The operator positions the prepared sand mold onto the furnace cover platform.
2. The mold seals automatically with the stalk tube.
3. The automated pressurization cycle initiates:
o Pressurized Pouring: Metal rises smoothly into the mold.
o Filling & Pressurization: Controlled cavity filling.
o Pressure Holding: Maintained during solidification.
o Pressure Release: Unsolidified metal returns to the furnace.
4. The mold is lifted off and opened for part removal.
✅ Core Technology: Precision Pressure Control
• Proportional Valve & High-Accuracy Sensor: Enable real-time, closed-loop pressure feedback and PID control within the holding furnace.
• Multi-Stage Linear Pressurization: Precisely follows programmed pressure curves.
• Critical for Sand Casting: Eliminates molten metal surface turbulence ("jitter") during filling, ensuring:
o Smooth, constant fill rates.
o Accurate pressure control.
o Exceptional process repeatability.
• Essential Compensation: Automatic leak compensation and liquid level compensation maintain stability.
• Result: Highly consistent castings, minimized sand erosion/scoring defects, and significantly improved yield.
✅ Intelligent Control & Data Management
• PC-Based HMI: Runs Weltop's proprietary Windows software with intuitive Chinese/English interface.
• Database Technology: Records and stores complete process data for every single casting.
• Traceability & Analysis: Enables historical data review, process optimization, and enhanced production quality management.
